AboutDon Berlan Expertise ASE Master Mechanic for 25 years. Can help with all aspects of BMW repair. I especially enjoy driveablity problems, mechanical or electrical.
Experience I have been an ASE Master Mechanic for 25 years.I have worked in many dealearships although BMW's are my favorite.I now have my own shop,specializing in BMW's.I have autocrossed and even gotten into mud running with my 4x4.(I am NOT a teacher and don't claim to know everything about the cars I never see.I hope to help you with your repairs and do expect some knowledge on your side.)
Question during the peak summer season in my town I experience "vapourlock" ..at least that is what folk suggest. I can drive my car for an extendes amount of time only to experience to what i would describe as "gas choking." If i pat the gas a few times when this first happens, i can conntinue a little while, but then it eventually dies out. I then have to wait for 30 to 40 mins. for it to start back up again. Before all this happens though, I hear a "humming" sound...this lets me know that at any given moment this will happen. I have a 1986 735 I vin# wbafh840xg0974121
Answer What you should do is check to make sure that Both fuel pumps are working.I know you say Both? yes There is one in the fuel tank.Although it does run there are two fuel pumps.The one in the tank and an external one.Often the one in the tank fails,and the one in the tank is overlooked in diagnosis.It can be check by removing it through the access cover in the trunk.The humming sound is a fuel pump and many times as well if you hear it very load its on its way out.Also replace your fuel filter because that too will cause your problems if it isn't changed regularly.
